Facturing coup aits



May 19, 1925. 1,538,097

- c. H. DRAPER HARNESS MECHANISM FOR LOOMS Filed June 5. 19 24 3 Shets-Shet. 1

May 19, 1925. I 1,538,097

' C. H. DRAPER HARNESS nwcmm-sm FOR Lows 3 Sheets-Sheet 2 Filed June 5, 1924 May 19, 1925.

C. H. DRAPER HARNESS MECHANISM FOR LOOMS Filed June 5, 1924 3 Sh t LShefl? Patented May 19,1925.

UNITED STATES I 1,538,097 'PATE NT- OFFICE.

CLARE n. nmmaior Hosanna, na'ssacnusmrs, assrenon. m norjznanr: MANU- FACTUG CORP ANY, 0F CHUSETTS.

mroim, mssacnusm'rs, A conroaa'rron or nassa- HARNESS MECHANISM FbR LOOKS.

To all whom it may concern:

Be it known that I, (JLARE I-I. DnArEn, a citizen of the United States, residing at Hopedale, in the county of Worcester and State of Massachusetts, have invented certain dew and useful Improvements in Har ness Mechanism for Looms; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The present invention relates to an improvement in harness mechanism for looms, and more particularly that part of the harness mechanism for looms by. which the harness is supported from the loom frame.

In the operation of looms when a war thread breaks the warp must be pieced. t

is a convenience in piecing the warp to drop hereinafter described and fined in the claims.

all the harnesses to one level.

The object of the present invention is to produce a simple andeflicient mechanism for this purpose. To this end the present invention consists in the harness mechanism particularly de- In the accompanyingdrawings illustrating the preferred form of the invention, Fig. 1'is a front elevation of a portion of the loom illustrating the harness supporting mechanism, showing the harnesses in low-. v ered position; Fig. 2 is a similar elevation of the mechanism showing the parts in the position they assume when the harnesses are in raised position; Fig. 3-.is a detail of a sheave bracket hereinafter referred to; Fig. 4 is a side elevation of the harness mechanism; and Fig. 5 is a detail hereinafter referred to.

The illustrated embodiment of the invention isdescribed as follows: The arch 1 of the loom frame supports a bracket 2 which extends upwardly f'rom one end of the arch. In the upper 'end of'this bracket the main stud 3 is secured. This mainfstud carries the mainlever 4 which is pivotally mounted on the stud, beingheld thereon by means of a cotter pin 5. The upper. arm 6 of the main lever carries a sheave stud 7 secured to the arm 6. On this stud are rotatably mounted the sheaves or strap pulleys" Sand 9. The pulleys 'are'integral and held'on the stud '7 by a collar 10. The other end '11 of the main; lever 4 carries a stud 12. On

ilk

Application filed June a, mu. Serial No. 711,527.

this stud is mounted the quadrant lever 13.

The upper portion of this lever, as viewed in Fig. 2, is a quadrant 14, and the lower end of this lever is a resetting handle 15. The quadrant 14 is provided with a notch 16 for a purpose presently to be stated. Also mounted on the stud 12 is the secondary lever 17 Theupper end 18 of this lever is provided with a release latch 19 pivoted at 20 on the secondary lever and normally ressed to the right, .as viewed in. F ig. 5,

y a spring 21. This release lever 19 is adapted to engage the notch 16 in the segment above referredto, The lower end 22 ner. Thus, the strap 31 extends around the pulley 8, and is secured thereto by the screw 41, the strap 32 extends around the pulley -9 and is secured'thereto by the screw 42,. the strap 33 extends around the quadrant 14' and is secured thereto by the screw 43, the, strap 34 extends around the pulley 24 and is securedthereto by the screw 44, and the strap. 35 extends around the pulley 25 and is secured thereto by the screw 45. The strap 35 supports .the foremost harness H by means of the two connections 55 and 65 The other straps similarlysupport the other harnesses. Each strap 31, 32, 33, 34 and 35 supports one harness frame. When the front harness frame is raised the strap 35 is pulled upon and another. strap is released to allow its'harness to descend. When the harness frame attached to the strap 33 is raised, both the straps 34 and 35, or straps 31 and 32, are lowered to permit; their har-. ness frames to descend, and so .on, in the usual manner. The\strap brackets 70- are mounted on the arch of the loom, and each carries a stud 71. and each such stud bears five sheaves 72, being held on -the stud by the collar 73.

The operation of this harness mechanism for lowering the harnesses to a uniform level for convenience in piecing the warp is as follows: 'Under ordlnary circumstances all of the harness straps .are tight, and-if in fsudh condition the'release lever- 19 be pulled a Then the tension on the harness straps w ll Cir yet the connected quadrant will be 2, and the release latch that we have means by I 4 for levelling the har-..

'' mg, in combination, a

tend to pull the top sheaves 8 and. 9, and thebottom sheaves 24 and 25, toward each other, thereby swmging the main lever to the right, and the secondary lever to the left, as shown in Fig. 2, and the tension on the strap 33 will tend to -swing the quadrant lever to the right, as, viewed in such figure, but the balance of the pressures will result in the parts assuming-the position illustrated inFig. 1. That is to say, the resetting handle of the quadrant lever and the release latch will be raised, and the swung to the right, as all of the belts will be may be accomplished. finished the operative shown in Fig. 1, and released, and piecing When the piecing is will take hold of the resetting handle 15 and the release latch 19, press downward upon them, thereby tightening all of the belts, and will finally move the quadrant in left hand rotation to the position shown in Fig.

lowered position, whereupon the release latch will catch in its notch in the quadrant, and the parts will be held in the position to which they have been brought.

It will be observed that the 13 and the secondary lever 17 ing secured together during normal operation of the. loom are in effect one lever,

constitutes the means'by which it may be broken for harness levelling. We have, therefore, virtually two levers, the one being the main lever 6, and the otherconsisting I uadrant. and secondary levers 13 'and 17. t will be apparent also which one of the two levers may be broken nesses.

It will be observed that the mechanism is extremely s'im le and inexpensive,'c'ertam in operation, an durable.

Haviilg thus described the invention, what is claim is': v

1. A harness -me ch'anism for looms havsplpport, a main lever e 811 port, having pivotally mounted on one arm carrying sheaves or arness strap pivotally to its right hand or qtigdrant lever and that the latch .and quadrant connection between them name to this specification.

pulleys, and a second arm,- another lever pivotally mounted on the second arm of the mam lever consisting of two parts, one provided with a notch and the other provided with a latch, the two parts of the latter lever being adapted to be locked together by the latch and notch,

sheaves or harness strap pulleys.

. 2. A harness mechanism for looms havmg, in combination, a support, a main lever pivotally mounted of which carries a plurality of harness strap attaching" means, another lever pivotally mounted on the arm of the main lever and carrying a plurality of harness strap attaching means, one oi said levers having and provided each with on the support, one arm means by which it maybe broken for-levelling the harnesses.

3. A harness mechanism for looms having, in combination, a support, a main lever mounted on the support, one arm carrying harness strap attaching means, and having also a second arm, a pivoted on the second arm oft e main lever, a secondary lever pivoted at the same point on the main lever as the quadrant lever and provided with harness strap attaching means, said secondary lever carrying a release latch, and said quadrant lever being provided with a segmental guide for .the

atch and having a notch to receive said release latch and hold the harness straps under tension.

4. A harness mechanism for looms havivotally mounted on the sup ever having two arms, one o a plurality of attachin means, a uadrant lever pivoted on the ot point on the main lever as the quadrant lever, said quadrant lever and secondary lever being provided with a plurality of harness strap attaching means, said secondary lever qrliadrant lever I er arm of t e'main lever, a secondary lever pivoted to the same carrying a release latch, and said quadrant lever be ng with a notch to receive rovided said release latch to hold the harness straps under tension. y 1 In testimony whereof I have signed my E H. DRAPER.

mg, in combination, a support, a mean lever rt, said mam WhlCh carries 

